Very Simple ICSP Programmer

[bearpawz]

Ok, I don't know what Im missing here....

I used the circuit after reading through this thread... actualy seems to be no problems with programming. Im using IC-PROG, load a simple hex file made from the pbp samples code to blink an LED on port 1. Im not using any external oscilators.

When I program, no problems. Read back it verifies correctly. Just to be sure I shut the whole thing down, restarted IC-PROG, and reloaded from the pic and there is indeed code in there.

When I pull pic out of the circuit and try to plug into simmple LED blink circuit, nothing happens. Blink circuit is nothing more than 5V+ on VDD, GND on VSS, Cathode of LED to ground, and Anode of LED to Pin 6 (RB0)..

Im using PIC16F818... Am I missing a config fues some where? its been over two years since ive toyed with these things so I cant remember what my set ups were back then

thanks in advance


oh yeah, and I already bought the programmer off e-bay... just waiting for it to show up from Hong kong... mean while this is all ive got and i have to start getting work on this project going.

[skimask]

Ok, I don't know what Im missing here....

I used the circuit after reading through this thread... actualy seems to be no problems with programming. Im using IC-PROG, load a simple hex file made from the pbp samples code to blink an LED on port 1. Im not using any external oscilators.

When I program, no problems. Read back it verifies correctly. Just to be sure I shut the whole thing down, restarted IC-PROG, and reloaded from the pic and there is indeed code in there.

When I pull pic out of the circuit and try to plug into simmple LED blink circuit, nothing happens. Blink circuit is nothing more than 5V+ on VDD, GND on VSS, Cathode of LED to ground, and Anode of LED to Pin 6 (RB0)..

Im using PIC16F818... Am I missing a config fues some where? its been over two years since ive toyed with these things so I cant remember what my set ups were back then

thanks in advance


oh yeah, and I already bought the programmer off e-bay... just waiting for it to show up from Hong kong... mean while this is all ive got and i have to start getting work on this project going.

MCLR pulled up to +5?

[bearpawz]

Actually, its not programming as nice as I thought. Not it seems hit or miss as to weather or not it fails. This is the scheme I have:


+12V------- LM7805 -------+5V------O |-- ->VDD(14)
| (switch)
|
GND/Vss




RS232 PIC16F818
TXD (3) ------[4.7] -------- VPP (4)
GND (5) -------------------- VSS (5)
DTR (4) ------[4.7]--------- PGD (13)
CTS (8) -------------------- PGD (13)
RTS (7) ------[4.7]--------- CLK (12)



ICPROG SETTINGS:
JDM Programmer on COM2, I/o Delay = 20, Direct I/O

I created a small program to blink an LED: Progam with these settings:

Oscilator = INTrc
Code Protect = OFF
Write Enable = OFF
Fuses:
WDT = 1
PWRT = 1
MCLR = 0
BODEN = 1
LVP = 0
CPD = 0
DEBUGGER = 0
CCPMX = 1


All in all just a head ache of problems... I sure hope my JDM programmer I bought of ebay comes in tomorrow... been over a week for "Air mail" to show up...